Introduction
This manual provides comprehensive instructions for the Armitron Sport Men's Analog-Digital Chronograph Watch, Model 20/5270BLK. Designed for durability and functionality, this watch combines classic analog timekeeping with modern digital features, making it suitable for various activities. Please read this manual thoroughly to understand all features and ensure proper use and maintenance of your watch.
Key Features
- Metallic grey resin case with black textured top ring; analog digital display with time, seconds, day, and date.
- Black resin strap with buckle closure for a secure fit.
- Functions include: chronograph, lap time, 5 alarms, military time, 100-year calendar, countdown timer, hourly chime, and backlight with three-second delay.
- Quartz Movement for accurate timekeeping.
- Water resistant to 100 meters (330 feet), suitable for swimming and snorkeling (not diving).
Product Overview

Front view of the Armitron Sport Men's Analog-Digital Chronograph Watch, showcasing its black resin case, analog and digital displays, and red accents.

Side view of the watch, highlighting the metallic grey resin case and the various function buttons.

Rear view of the watch, showing the stainless steel case back and the durable black resin strap.

The watch worn on a wrist, demonstrating its size and fit during an outdoor activity.

Top-down view of the watch on a wrist, providing a clear perspective of the dial and strap.
Setup and Initial Configuration
Your Armitron Sport watch comes with pre-installed batteries. To set the time and date, refer to the following general steps. Specific button functions are typically labeled on the watch case (e.g., MODE, RESET, ST/STP, EL).
- Time Setting: Press the MODE button repeatedly until the time setting mode is activated (usually indicated by flashing digits). Use the RESET or ST/STP buttons to adjust hours, minutes, and seconds. Press MODE again to confirm and move to the next setting.
- Date Setting: In the time setting mode, continue pressing MODE to cycle through year, month, and day settings. Adjust values using RESET or ST/STP.
- 12/24 Hour Format: This watch supports both 12-hour (AM/PM) and 24-hour (military) time formats. This setting can usually be toggled during time setup.
- Analog Hand Synchronization: If the analog hands do not match the digital time, consult the full manual for specific instructions on how to synchronize them. This often involves holding a button (e.g., RESET) while in time setting mode to move the analog hands.
Operating Modes
Navigate through the watch's various functions using the MODE button.
- Time Mode: Displays current time, day, and date.
- Chronograph (Stopwatch):
- Press MODE to enter Chronograph mode.
- Press ST/STP to start and stop the timer.
- Press RESET to reset the timer to zero.
- Lap time functionality allows recording intermediate times without stopping the main timer.
- Alarm Mode:
- Press MODE to cycle to Alarm mode.
- Use RESET or ST/STP to set the alarm time.
- Activate or deactivate alarms as needed. The watch supports up to 5 individual alarms.
- Countdown Timer:
- Enter Countdown Timer mode via MODE.
- Set the desired countdown duration.
- The watch will alert you when the countdown reaches zero.
- Backlight: Press the EL (Electroluminescent) button to illuminate the digital display for three seconds in low-light conditions.
Water Resistance
This Armitron Sport watch is water resistant to 100 meters (330 feet). This rating indicates that the watch is suitable for recreational swimming and snorkeling. It is not suitable for scuba diving or high-impact water sports.

Detailed water resistance chart explaining different levels of water exposure for watches.
To maintain water resistance, ensure all buttons are fully pushed in before exposing the watch to water. Avoid operating buttons while the watch is wet or submerged.
Maintenance and Care
Proper care will extend the life and appearance of your Armitron watch.
- Cleaning: Wipe the watch case and strap with a soft, damp cloth. For resin straps, mild soap and water can be used, then rinse thoroughly and dry.
- Avoid Chemicals: Do not expose the watch to harsh chemicals, solvents, or detergents, as these can damage the resin and seals.
- Temperature Extremes: Avoid exposing the watch to extreme temperatures (hot or cold) for prolonged periods, as this can affect battery life and internal components.
- Battery Replacement: When the display dims or functions become erratic, it may be time to replace the battery. It is recommended to have battery replacement performed by a qualified watch technician to ensure water resistance is maintained.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Digital display is dim or blank. | Low battery. | Replace battery. |
| Analog hands do not match digital time. | Hands are out of sync. | Refer to the full manual for analog hand synchronization steps. |
| Watch functions are not responding. | Temporary software glitch or low battery. | Try a soft reset (if applicable, consult manual) or replace battery. |
| Water inside the watch. | Water resistance compromised. | Immediately take to a qualified watch technician for inspection and repair. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | 20/5270BLK |
| Case Diameter | 53 millimeter |
| Material | Resin (Case and Strap) |
| Movement | Quartz Movement |
| Water Resistance | 100 meters (330 feet) |
| Battery | 1 Product Specific battery (included) |
| Manufacturer | Armitron Sport |
| Country of Origin | China |
Official Product Video
An official product video showcasing the Armitron Sport Men's Analog-Digital Chronograph Watch, highlighting its design and features.
Warranty and Support
For information regarding warranty coverage, product support, or to purchase replacement parts, please visit the official Armitron website or contact their customer service department. Keep your purchase receipt as proof of purchase for warranty claims.
You can find more information and contact details on the Armitron Store Page.





